Optimized analog filter designs with flat responses by semidefinite programming

  • Authors:

  • Nguyen Thien Hoang;Hoang Duong Tuan;Truong Q. Nguyen;Hung Gia Hoang

  • Affiliations:

  • Department of Electrical and Electronic Engineering, University of Melbourne, Parkville, VIC, Australia;School of Electrical and Telecommunication Engineering, University of New South Wales, Sydney, NSW, Australia;Department of Electrical and Computer Engineering, University of California in San Diego, La Jolla, CA;School of Electrical and Telecommunication Engineering, University of New South Wales, Sydney, NSW, Australia

  • Venue:
  • IEEE Transactions on Signal Processing
  • Year:
  • 2009

Quantified Score

Hi-index 35.69

Visualization

Abstract

Analog filters constitute indispensable components of analog circuits. Inspired by recent advances in digital filter design, this paper provides a flexible design for analog filters. All-pole filters have maximally flat passband, so our design minimizes their passband distortion. Analogously, maximally flat filters have maximally flat passband, so our design maximizes their stopband attenuation. Its particular cases provide flexible alternatives to the classical counterparts. Semidefinite program (SDP) formulations for the posed filter design problems are presented, which are efficiently solved by existing optimization software. Several examples and comparisons are provided to validate the viability of our design.